201555393 has 8 divisors (see below), whose sum is σ = 289412928. Its totient is φ = 124034064.

The previous prime is 201555379. The next prime is 201555413. The reversal of 201555393 is 393555102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201555393 - 2¹⁰ = 201554369 is a prime.

It is a super-3 number, since 3×201555393³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (201555353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2584005 + ... + 2584082.

It is an arithmetic number, because the mean of its divisors is an integer number (36176616).

Almost surely, 2^201555393 is an apocalyptic number.

It is an amenable number.

201555393 is a deficient number, since it is larger than the sum of its proper divisors (87857535).

201555393 is a wasteful number, since it uses less digits than its factorization.

201555393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5168103.

The product of its (nonzero) digits is 20250, while the sum is 33.

The square root of 201555393 is about 14197.0205677107. The cubic root of 201555393 is about 586.3156334850.

The spelling of 201555393 in words is "two hundred one million, five hundred fifty-five thousand, three hundred ninety-three".